Does perioperative systemic infection or fever increase surgical infection risks after internal fixation of femur and tibia fractures in an intensive care polytrauma unit
2013
BACKGROUND: We hypothesized that internal fixation procedures performed on trauma intensive care unit (ICU) patients with systemic infections, some also febrile, would be at increased risk for deep infection. METHODS: A total of 128 patients (mean age, 37.4 years; mean Injury Severity Score [ISS], 34.7) admitted to the ICU with 179 femur or tibia fractures developed systemic infections. Systemic infections included sepsis, pneumonia, urinary tract infections, abdominal infections, and wound infections remote to the fracture. Of the fractures, 33 open and 146 closed underwent 150 intramedullary and 29 plate fixation procedures. Data were gathered regarding antibiotic use, systemic infection timing in relation to the date of fixation, and whether fever (>38.2°C) was present within 24 hours of fixation. Patients were followed up for a mean of 491 days. RESULTS: Twenty-eight procedures were performed a mean of 4.7 days after the diagnosis of a systemic infection, and 151 were performed a mean of 9.3 days before the diagnosis. Forty-five procedures were performed in patients who were febrile within 24 hours. Of the 179 procedures, 10 (5.6%) developed a deep infection. Four patients' implant infection was potentially hematogenously seeded with the same organism as their systemic infection. Neither the timing of the systemic infection in relation to the fixation procedure nor the presence of fever within 24 hours of fixation, days of preoperative antibiotics, location of the fracture, type of fixation (intramedullary nail vs. plate fixation), or type of systemic infection was significantly associated with the development of an infection. The only significant risk factor for developing an orthopedic infection was an open fracture (p < 0.001). CONCLUSION: Internal fixation performed in ICU patients with fever or in close conjunction to the diagnosis of systemic infection led to a 5.6% infection rate, which compares favorably with historic infection rates for fixation of open or closed tibia and femur fractures. LEVEL OF EVIDENCE: Therapeutic, level IV.
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